A declaration of ownership and use — what should you know about notary-related requirements?

The scope of this answer is “A declaration of ownership and use”, so it deals with the case-specific points first and the shared rules afterwards. The specifics here are document type: Declaration, and those decide which translation and certification level applies. The terms that frame this page are declaration · ownership · know · notary-related. The deciding factor is the receiving body's requirement, not only the format of the Thai-side document. The most frequent cause of delay in this group is missing supporting documents on the first submission. Before starting, confirm with the receiving body whether it wants an original, a certified copy or a certified translation, then check that names are spelled identically to the passport or ID card on every page, then verify the source document is still within any validity window the recipient applies. Documents with a short validity window should be produced as close to the filing date as possible. If multiple certified sets are needed, order them all in the first round to avoid re-queuing. High-resolution photos of seals and signatures help when the destination asks for re-verification. Record the reference number of each certification layer; it is the fastest way to trace status. After filing, follow up on the cycle the office states rather than waiting past the deadline. Thailand has no common-law notary public. Signature certification, true-copy certification and affirmations are performed by a Notarial Services Attorney registered under Lawyers Council of Thailand regulations. In IP work the documents most often certified are powers of attorney, declarations of ownership and statements of trademark use. An applicant without a domicile or a real and effective place of business in Thailand must act through a locally authorised agent. A power of attorney signed abroad must carry the signature certification and legalisation DIP requires, together with a Thai translation. Confirm the form and wording with the agent before signing, because later amendments mean re-certifying the whole set. Thai intellectual-property documents used abroad follow this order: a complete translation, signature certification by a notarial services attorney where the receiver requires it, certification by the Legalisation Division of the Department of Consular Affairs, Ministry of Foreign Affairs, then the destination embassy or consulate where required. Confirm the order with the receiving party first — skipping one step means starting again. Cost and lead time depend on page count, target language, how technical the text is and the certification steps required, so every file is quoted before work starts. Send scans of every page together with the written requirements from the Department of Intellectual Property, the receiving agent or the requesting authority via LINE @NAATI, call +66 80-557-8887 or email ilc@thainotary.co.th.

ปรึกษาฟรี — LINE @NAATI · โทร 080-5578887 · อีเมล ilc@thainotary.co.th